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2015-02-06T14:34:23+05:30

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So out of 2900 marble we have 29 % orange marble and 29% blue marbles

so total orange marbles is 2900 x 29 / 100 = 842 orange marbles

and similarly we have 841 blue marbles 

so total green marbles is 2900 - 2(841) = 1218 

so % green = 1218/2900 x 100 = 42 % 

                                       OR
 

simple method

total 

100 % marbles we have a 29% orange and blue marbles

so total percent of blue and orange marbles is 29 % + 29 % = 58 %

so total  % green marbles = 100 % - 58 % = 42  %
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